Reynold Andika Pratama
Dian Nusantara University

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APPLICATION OF BAMBOO PILES IN ATHLETIC TRACK CONSTRUCTION Reynold Andika Pratama; Ervina Yuliyanti; Savira Septiarini; Gita Puspa Artiani
International Journal Multidisciplinary Science Vol. 4 No. 1 (2025): February: International Journal Multidisciplinary Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijml.v4i1.2219

Abstract

This study explores the application of bamboo piles as a sustainable ground improvement technique in the construction of an athletic track at the Malabar National Athletic Training Center in Pangalengan, West Java. Utilizing a qualitative case study approach, the research documents the implementation methods, technical considerations, and performance outcomes of bamboo pile foundations in addressing geotechnical challenges posed by soft clay soils and high groundwater levels. The bamboo piles, made from Gigantochloa apus, were systematically prepared, treated with borax-boric acid for durability, and installed in a triangular grid pattern to enhance soil bearing capacity and minimize settlement. The integrated foundation system, combining bamboo piles with gravel layers, drainage systems, and a synthetic track surface, met the International Association of Athletics Federations (IAAF) performance criteria, achieving a bearing capacity improvement of 180-220% and maximum settlement of 12 mm. The approach offered significant economic benefits, with 35-45% cost reductions compared to conventional concrete piles, and environmental advantages, including a 60-70% lower carbon footprint. This research underscores the viability of bamboo piles as a cost-effective, environmentally friendly solution for specialized construction, bridging traditional knowledge with modern engineering practices. Recommendations for future applications include rigorous geotechnical investigations, quality control, and long-term performance monitoring to ensure reliability.
COLUMN STRUCTURAL WORK METHODS IN MULTI-STORY RESIDENTIAL BUILDING CONSTRUCTION Reynold Andika Pratama; Adri Fato; Angga Jaya Dipringga; Agil Finalyanto
International Journal Multidisciplinary Science Vol. 4 No. 1 (2025): February: International Journal Multidisciplinary Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijml.v4i1.2220

Abstract

This study investigates the column structural work methods employed in the construction of a 4-story residential building in Pondok Indah, South Jakarta, focusing on preparation, execution, and quality control processes. Utilizing a qualitative observational approach during a professional internship, the research documents reinforcement fabrication, formwork installation, concrete placement, formwork removal, and curing practices. Key findings highlight the use of 16-25mm deformed bars for longitudinal reinforcement, plywood formwork with steel supports, and a 30 MPa concrete mix, with systematic procedures ensuring dimensional accuracy and structural integrity. Quality control measures, including plumbness checks, slump testing, and compressive strength verification, were critical to achieving compliance with project specifications. The study underscores the importance of precise reinforcement assembly, controlled concrete placement, and rigorous quality protocols in balancing theoretical design requirements with practical implementation. The methods demonstrated efficiency and quality, aligning with established standards while adapting to site-specific conditions. Recommendations for future projects include detailed planning for reinforcement, investment in quality formwork, comprehensive quality control, and worker training to enhance efficiency and durability. This research provides practical insights for civil engineers aiming to optimize column construction in multi-story residential buildings.
Concrete Delamination Analysis and Repair Methods in Residential Buildings Reynold Andika Pratama; Yuli Sulistyohadi; Jody Sutiawan; Pangeran Holong Sitorus
International Journal Multidisciplinary Science Vol. 4 No. 2 (2025): June: International Journal Multidiciplinary Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijml.v4i2.2221

Abstract

Laminated concrete involves removing a thin layer from the concrete surface, making it prone to abrasion and weakening the structure. This delamination, often termed concrete weathering, produces a "drumming" sound when the surface is hammered, signaling the need for repair to prevent further spread. Delamination can result from poor concrete mix or casting issues, such as segregation when fresh concrete is poured. Quality control is crucial before pouring concrete into formwork for columns and walls. Checks like the slump test ensure proper workability, while concrete test specimens verify the mix meets the 28-day characteristic compressive strength. Casting concrete from heights exceeding 1.5 meters can cause delamination by segregating fine and coarse aggregates. Repairs for delaminated surfaces include grouting, plastering, or injecting. In a 4-story house construction project, plastering is often preferred due to the ready availability of materials like fine sand and cement, making it an effective solution. To summarize, delamination weakens concrete structures and requires timely detection and repair. Proper quality control during concrete mixing and casting, including slump tests and strength verification, helps prevent segregation and delamination. For repairs, plastering is a practical choice in multi-story projects due to material accessibility
Formwork Implementation Methods for Reinforced Concrete Column Structures Using PERI System Reynold Andika Pratama; Marysca Shintya Dewi; Wildan Abdul Jabar; Aryo Bismoko
International Journal Multidisciplinary Science Vol. 4 No. 2 (2025): June: International Journal Multidiciplinary Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijml.v4i2.2226

Abstract

This study investigates the implementation methods of the PERI formwork system for reinforced concrete column structures in the KAI CO-Living Gondangdia project, an 8-story residential building in Central Jakarta. Employing a qualitative case study approach, the research documents the assembly, installation, concrete placement, and removal processes of the PERI system during a three-month internship. Key aspects analyzed include material preparation, panel assembly, alignment techniques, quality control measures, and safety protocols. The PERI system, characterized by modular steel-framed panels and phenolic-coated plywood, facilitated rapid assembly (45-60 minutes per column), high dimensional accuracy (±3mm tolerance), and excellent concrete surface quality for 85% of columns. The system’s reusability (24 cycles) and reduced labor requirements (25% less than traditional methods) enhanced project efficiency. Standardized procedures, skilled labor, and rigorous quality control were critical to success, though specialized training was necessary. The findings highlight the PERI system’s advantages in speed, quality, and cost-effectiveness for repetitive structural elements, offering practical insights for optimizing formwork in modern construction. Recommendations include investing in crew training, detailed planning, and comprehensive quality protocols to maximize system benefits.